Micromachined resonant magnetic field sensors
    5.
    发明授权
    Micromachined resonant magnetic field sensors 有权
    微机械谐振磁场传感器

    公开(公告)号:US08947081B2

    公开(公告)日:2015-02-03

    申请号:US13004383

    申请日:2011-01-11

    CPC分类号: G01R33/038 G01R33/0286

    摘要: A micromachined magnetic field sensor is disclosed. The micromachined magnetic field sensor includes a substrate; and a drive subsystem partially supported by the substrate with a plurality of beams, and at least one anchor; a mechanism for providing an electrical current through the drive subsystem along a first axis; and Lorentz force acting on the drive subsystem along a second axis in response to a magnetic field vector along a third axis. The micromachined magnetic field sensor also includes a position transducer to detect the motion of the drive subsystem and an electrostatic offset cancellation mechanism coupled to the drive subsystem.

    摘要翻译: 公开了一种微加工磁场传感器。 微加工磁场传感器包括基板; 以及驱动子系统,其由具有多个梁的所述衬底部分地支撑,以及至少一个锚; 用于沿着第一轴线提供穿过所述驱动子系统的电流的机构; 以及响应于沿着第三轴的磁场矢量沿第二轴作用在驱动子系统上的洛伦兹力。 微加工磁场传感器还包括位置传感器,用于检测驱动子系统的运动和耦合到驱动子系统的静电偏移消除机构。

    DRIVE SYSTEM FOR MICROMACHINED MAGNETIC FIELD SENSORS
    6.
    发明申请
    DRIVE SYSTEM FOR MICROMACHINED MAGNETIC FIELD SENSORS 审中-公开
    微型磁场传感器的驱动系统

    公开(公告)号:US20120235670A1

    公开(公告)日:2012-09-20

    申请号:US13421545

    申请日:2012-03-15

    IPC分类号: G01R35/00

    CPC分类号: G01R33/028

    摘要: Described herein are systems, devices, and methods that provide a stable magnetometer. The magnetometer includes a drive element that facilitates flow of a drive current through a node and a sense element operable to detect a magnetic field operating on the drive current. To reduce offset in the detection of the magnetic field, a voltage detector, electrically coupled to the drive element through the node, determines a variation between a node voltage and a target voltage. The voltage detector facilitates suppression of the variation and thereby minimizes the offset in the sense element.

    摘要翻译: 这里描述了提供稳定磁力计的系统,装置和方法。 磁力计包括驱动元件,其驱动驱动电流流过节点,感测元件可操作以检测在驱动电流上运行的磁场。 为了减少磁场检测中的偏移,通过节点电耦合到驱动元件的电压检测器确定节点电压和目标电压之间的变化。 电压检测器有助于抑制变化,从而使感测元件中的偏移最小化。

    Micromachined magnetic field sensors
    7.
    发明授权
    Micromachined magnetic field sensors 有权
    微加工磁场传感器

    公开(公告)号:US08395381B2

    公开(公告)日:2013-03-12

    申请号:US12833390

    申请日:2010-07-09

    IPC分类号: G01R33/02 G01R33/09 G01R33/07

    摘要: A micromachined magnetic field sensor integrated with electronics is disclosed. The magnetic field sensors utilize Hall-effect sensing mechanisms to achieve 3-axis sensing. A Z axis sensor can be fabricated either on a device layer or on a conventional IC substrate with the design of conventional horizontal Hall plates. An X and Y axis sensor are constructed on the device layer. In some embodiments, a magnetic flux concentrator is applied to enhance the performance of the magnetic field sensor. In some embodiments, the magnetic field sensors are placed on slope sidewalls to achieve 3-axis magnetic sensing system. In some embodiments, a stress isolation structure is incorporated to lower the sensor offset. The conventional IC substrate and device layer are connected electrically to form a 3-axis magnetic sensing system. The magnetic field sensor can also be integrated with motion sensors that are constructed in the similar technology.

    摘要翻译: 公开了一种与电子器件集成的微加工磁场传感器。 磁场传感器利用霍尔效应感测机构实现3轴感测。 Z轴传感器可以在设备层或常规IC基板上制造,具有常规水平霍尔板的设计。 X和Y轴传感器构造在器件层上。 在一些实施例中,施加磁通集中器以增强磁场传感器的性能。 在一些实施例中,磁场传感器被放置在倾斜侧壁上以实现3轴磁感测系统。 在一些实施例中,结合了应力隔离结构以降低传感器偏移。 常规IC基板和器件层电连接以形成3轴磁感测系统。 磁场传感器也可以与以类似技术构造的运动传感器集成。

    Micromachined resonant magnetic field sensors
    8.
    发明授权
    Micromachined resonant magnetic field sensors 有权
    微机械谐振磁场传感器

    公开(公告)号:US08860409B2

    公开(公告)日:2014-10-14

    申请号:US13004365

    申请日:2011-01-11

    CPC分类号: G01R33/038 G01R33/0286

    摘要: A micromachined magnetic field sensor is disclosed. The micromachined magnetic field comprises a substrate; a drive subsystem, the drive subsystem comprises a plurality of beams, and at least one anchor connected to the substrate; a mechanism for providing an electrical current through the drive subsystem along a first axis; and Lorentz force acting on the drive subsystem along a second axis in response to a magnetic field along a third axis. The micromachined magnetic field sensor also includes a sense subsystem, the sense subsystem includes a plurality of beams, and at least one anchor connected to the substrate; wherein a portion of the sense subsystem moves along a fourth axis; a coupling spring between the drive subsystem and the sense subsystem which causes motion of the sense subsystem in response to the magnetic field; and a position transducer to detect the motion of the sense subsystem.

    摘要翻译: 公开了一种微加工磁场传感器。 微加工磁场包括基片; 驱动子系统,所述驱动子系统包括多个梁,以及连接到所述基板的至少一个锚固件; 用于沿着第一轴线提供穿过所述驱动子系统的电流的机构; 以及响应于沿着第三轴的磁场沿第二轴作用在驱动子系统上的洛伦兹力。 微加工磁场传感器还包括感测子系统,感测子系统包括多个光束,以及至少一个连接到衬底的锚; 其中所述感测子系统的一部分沿着第四轴线移动; 驱动子系统和感测子系统之间的耦合弹簧,其引起感测子系统响应于磁场的运动; 以及用于检测感测子系统的运动的位置传感器。

    MICROMACHINED OFFSET REDUCTION STRUCTURES FOR MAGNETIC FIELD SENSING
    9.
    发明申请
    MICROMACHINED OFFSET REDUCTION STRUCTURES FOR MAGNETIC FIELD SENSING 审中-公开
    用于磁场感测的MICROMACHINED偏移减少结构

    公开(公告)号:US20120007597A1

    公开(公告)日:2012-01-12

    申请号:US12833622

    申请日:2010-07-09

    IPC分类号: G01R33/02

    CPC分类号: G01R33/07 G01R33/0011

    摘要: A micromachined magnetic field sensor integrated with electronics is disclosed. The magnetic field sensors utilize Hall-effect sensing mechanisms to achieve 3-axis sensing. A Z axis sensor can be fabricated either on a device layer or on a conventional IC substrate with the design of conventional horizontal Hall plates. An X and Y axis sensor are constructed on the device layer. In some embodiments, a magnetic flux concentrator is applied to enhance the performance of the magnetic field sensor. In some embodiments, the magnetic field sensors are placed on slope sidewalls to achieve 3-axis magnetic sensing system. In some embodiments, a stress isolation structure is incorporated to lower the sensor offset. The conventional IC substrate and device layer are connected electrically to form a 3-axis magnetic sensing system. The magnetic field sensor can also be integrated with motion sensors that are constructed in the similar technology.

    摘要翻译: 公开了一种与电子器件集成的微加工磁场传感器。 磁场传感器利用霍尔效应感测机构实现3轴感测。 Z轴传感器可以在设备层或常规IC基板上制造,具有常规水平霍尔板的设计。 X和Y轴传感器构造在器件层上。 在一些实施例中,施加磁通集中器以增强磁场传感器的性能。 在一些实施例中,磁场传感器被放置在倾斜侧壁上以实现3轴磁感测系统。 在一些实施例中,结合了应力隔离结构以降低传感器偏移。 常规IC基板和器件层电连接以形成3轴磁感测系统。 磁场传感器也可以与以类似技术构造的运动传感器集成。

    Integrated MEMS device and method of use
    10.
    发明授权
    Integrated MEMS device and method of use 有权
    集成MEMS器件及其使用方法

    公开(公告)号:US08567246B2

    公开(公告)日:2013-10-29

    申请号:US12979960

    申请日:2010-12-28

    IPC分类号: G01C19/56

    CPC分类号: G01R33/0286 H03H3/0073

    摘要: An integrated MEMS device is disclosed. The system comprises a MEMS resonator; and a MEMS device coupled to a MEMS resonator. The MEMS resonator and MEMS device are fabricated on a common substrate so that certain characteristics of the MEM resonator and MEMS device track each other as operating conditions vary.

    摘要翻译: 公开了集成的MEMS器件。 该系统包括MEMS谐振器; 以及耦合到MEMS谐振器的MEMS器件。 MEMS谐振器和MEMS器件制造在公共衬底上,使得MEM谐振器和MEMS器件的某些特性在操作条件变化时彼此跟踪。